Flushing-valve.



E1. BLOOM.

FLUSHING VALVE.

- APPLICATION FILED APR. 1. 1909.

Patented Apr. 18, 1916.

2 SHEETS-SHEET l- E. J. BLOOM.

FLUSHING VALVE. APPLICATION FILED APR. I. 1909.

2 SHEETS-SHEET 2- cam Ilitnnmrn lhmmmr ment in Flushing-Valves, and declare OFFIC.

EDGAR J. BLOOM, OF TIFFIN, OHIO.

FINISHING- VALVE.

raccoon.

Specification of Letters Patent.

Patented Apr. 18, 1916.

Application filed April 1. 1909. Serial No. 487,304.

To all whom it 'l/my concern Be it known that I, EDGAR J. BLOOM, a citizen of the United States, residing at Tifi'ln, county of Seneca, State of Ohio, have invented a certain new and useful lmprovket 1e following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which r'orin a part of this specification.

My invention relates to flushing valves,

'' and consists in the improvements herein after described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal central section of a flushing valve embodying my invention. Fig. 2 is a cross section in the plane indicated by the line 2*- Fig. 1. Fig. 3 is a perspective view of the conical four-way cock plug removed from the cock chamber. Fig. 4 is a detail view showing the end of the stem of the conical four-way cock plug. Fig. 5 is a detail cross section in the plane indicated by the line 5"-5 Fig. 2, looking from the right of said figure. Fig. 6'is a side eleva tion of an apparatus with a flushing valve embodying my invention, secured in place. Fig. '7 is a detailed section on the line 7 7", Fig. 2. Fig. 8 is a section, to a reduced scale, in the plane indicated by the line 8-8, Fig. 1. Fig. 9, is a detail view show- 35 ing the head of the screw I, the cap J being removed. ,7 2 is a cylinder in which a double piston 10, consisting of two parts 1, P connected by a part P of less diameter than the parts is adapted .to reciprocate. t is an inlet passage adapted to communicate with a source of water supply under pressure. and T is a port opening into the center of the cylinder 2 from the passage t.

T is an outlet passage opposite the inlet passage t.

D is a conical four-way cock plug adapted to fit and turn within a conical chamber 1). L L and M M are grooves cut in the plug D ofthe conical four-way cock, and B, B

are ports cored through the wall of the chamber. The ports B, B are extended in slots N, N.

B B are ports through the wall of the chamber 1), at ninety degrees from the ports B, B and extended in slots N N A A (Fig. 1) are passageways drilled in the Wall of the cylinder 2, said passageways cxtendmg from the respective ends of said cylinder and open at their inner ends to ports B B, respectively openin through the conical four-way cock cham er D at positions ninety degrees from the ports B, B. The ends of the cylinder 2 are thickened to produce broad surfaces for receivng a washer and cap plates C, C. These cap plates are hollowed out, the cavity opening within the cylinder 2,'and said cavity is surrounded by a valve seat 3.

a is a passage in the wall of each of the caps C, 0, one end of which opens to the cavity in said cap and the other end registers with the end of a passage A, A

The piston within the cylinder 2 consists of two ends parts P P adapted to fit loosely within the bore of the cylinder 2, and a part P smaller in diameter than the parts P P joining the last named parts. The part P is formed in cross section, as shown in Fig. 2, so as to present the ratchetlike steps, or projections P, so that a vertical or concave surface is presented to the stream entering the port or passage T, upon one side of a plane in which the axes of the piston 10 and pi ing T, Q, R, both lie and an inclined sur ace upon the other side. The steps P are formed spiral, so that one step shall never entirely cover the other, but a concave or vertical surface shall always be presented to the stream of entering water.

4, 4 are disks secured on the ends of the piston P P adapted to seat against the valve seat 3, at one end or the other of the cylinder 2, so that when the piston is at the end of its stroke it shall be firmly held there by main water pressure which enters the c amber through by-passes and has moved the piston over to the opposite end, notwithstanding there may be some leakage past the piston heads P P f is a stem extending from the outer end of the conical four-way cock plug D. The stem 7 is formed into an approximately square cross section for a portion of its length 9, at the outer end of said stem.

H is a handle adapted to fit upon the squared portion 9 of the stem f, to turn the conical four-way cock plug D to the various positions. \Vhen the handle H is turned to ward one extreme of its angular travel, one of the passages A or A is put into communication with the passage A and the source of pressure, while the other passage A or A is put into communication with the passage A and the discharge passage '11 of the valve. In this position the first named passageconducts water under pressure to one end of the cylinder 2, which forces the piston in said cylinder toward the other end of the same, while the water is exhausted through the passage A from said other end of the cylinder 2. \Vhen the piston 10 is at the extreme end of its travel, one of the heads 1", l is opposite the ports '1 and T closing the same, except for the leakage past the piston which is made about .OOt inch smaller than the bore of the cylinder. When the piston is in transit, a head P of the piston passes from opposite the ports T and T allowing the water to rush from the port T transversely across the cylinder 2, between the heads P, P of the piston, and out at the exhause port T The stream of water in passing impinges against the steps 1 on the intermediate portion P of the piston 10, acting most strongly upon that step which presents a concave or vertical surface to said stream, thus causing the piston 10 to rotate. Thus the piston is continually turned in the cylinder and wears uniformly. Owing to the fact that the piston heads I, I are. about four thousandths of an inch smaller than the bore of the cylinder 2, there is always a lubricating film of water between the cylinder Walls and said heads.

The speed with which the piston 10, traverses the cylinder 2 depends upon the extent of opening from the passages A, and also upon the pressure of the water in the inlet passage If, so that an approximately uniform quantity of water is discharged at each operation without regard to whether there is more or less pressure, because if the pressure is high, the water will be forced through the ports T and T at a greater rate. but at the same time, the water will be forced through the passage A at a proportionately greater rate, so that the time of traverse of the piston will be proportionately shorter.

h is a lug upon the cylinder 2-.

71. is a sector-like trough, U-sha-ped in cross-section, formed upon the handle II and embracing the lug b.

72. k are set screws at each end of the sector-like trough 72. which screws strike against the lug /L to limit the motion of the handle H In the ordinary operation the handle II is thrown to one or the other extreme of its travel and the. extent to which the passage A is opened is regulated by ad justing the set screws It, it, and consequently the amount of water passing at each operation is regulated by the adjustment of said screws.

It will be noted that there are slots M in the four-way cock plug (Fig. 3 Said slots are located at a different angular position from that of the slots L. so that when said plug is turned to a position such that the slots L do not connnunicate with a port in the wall of the four-way cock chamber, then the slots M will form a communication with the extension slots N and N and the piston will be carried to the end of its travel and will not be held in an intermediate position.

The squared portion 5 of the stem of the conical tour-way cock plug l), is slotted, as indicated distinctly in Fig. -l, and has one corner cut away, as also indicated in that figure. The aperture in the handle H has one corner filled in to fit the cut away portion of the squared part g, so that said handle can be placed upon the stem in only one position. Said part 9 is bored centrally to receive the conical head of a screw I the threads of the shank of which engage threads in the lower portion of the bored out part of said stem. The head of the screw I is provided with external screw-threads toward its outer end, and at this part the head is partly flattened or cut away so that it may be engaged by a wrench to manipulate the screw. By forcing the screw I in by means of a wrench engaging its head, the squared part of the stem is expanded to fit accurately the aperture in the handle II, so that there is no lost motion between the handle and stem and the angular position of the handle is accurately lixcd relative. to the conical four-way cock plug D.

K is a butter, or button, of rubber or other suitable resilient material, placed upon the head of the screw I.

J is a cap-like nut, the threads of which engage the threads on the heads of the screw I. There is an aperture through the outer end of the nut J and the edges around said aperture are turned. inward to form a shoulder engaging a corresponding shoulder on the button K. By screwing down the nut J the button K is firmly fixed in position and a yielding pressure is brought upon the head of the screw I and upon. the nut J, which latter also engages the handle H to hold the same firmly in position. The button K protrudes through the outer end of the nut J and by screwing down upon said nut the button is pressed against the head of the screw I, thus holding it firmly in place. The protruding part of said button forms a buffer against which a cover K may strike, as shown in Fig. 6.

G is a gland-nut surrounding the stem f of the conical four-way cock plug D and engaging a screw-threaded boss, which protrudes from the cylinder 2.

F is a jam-nut, the threads of which engage with the threads on the boss protruding from the cylinder 2. The nut F is adapted to engage the gland-nut G to fix the same in position. A hard canvas packing E, having a lubrication preparation in same is used under the gland G, and the conical four-way cock plug is held on its seat by the tension of this packing E, caused by the gland-nut G being drawn down on same, and after the proper tension is brought to bear on the conical four-way cock plug D, the lock nut F is used to secure same.

It will be observed that the various passages in the cylinder 2 may be, formed by drilling, and coring may be largely avoided. Thus, to form the passage A, a drill may be inserted through the opening 25. To form the passage A a drill may be inserted through the opening to, and the passageways A A may be formed by drilling in from each of the enlarged ends of the cylinder 2. I however form the mouths of the passages, or ports, opening into the four-way cock chamber by coring, and the drilled passages are made to communicate with these short cored passages. Thus the ports are accurately located and it is not necessary to take as much pains in drilling the passages as would otherwise be necessary. The screw holes, through which the screws are placed to secure the ends C in place, are located irregularly, so that said caps can be secured only in one position and so that the ends of the passages a, shall necessarily register with the outer ends of the passages A The short drilled passages have smooth walls and are easily cleaned.

R is a tail piece leading from the exit opening u. p

Q is a piece of brass tubing, having its upper end notched, and at its lower end fitting into the tail piece R, so that it will easily slide up and down, leaving a space above the tail piece R and outside of said tubing with which the passage A communicates. Said space forms the water seal for the passage A In addition to the usual function such a seal acts to prevent a noisy discharge.

What I claim is 1. In an apparatus of the kind described, the combination of a cylinder having an inlet passage and an exit passage, a piston controlling communication between said passages, an auxiliary valve controlling the movement of said piston, and a passage A adapted to deliver water from said auxiliary valve into said exit passage at the side and toward the inner end thereof, said exit passage comprising a tail piece It having its inner end located at a point outside of the outlet from the passa e A and a tube Q open at its inner end, iitting into said tail piece and extending from the inner end thereof to a point in advance of the outlet from the passage A so as to form the inner wall of a chamber surrounding the protruding end of said tube.

2. The combination of a cylinder, a piston therein adapted to be reciprocated by fluid pressure, a cock located on said cylinder, said cylinder being provided with a passage leading to one end thereof, and a passage leading to the other end thereof, said cock having a chamber provided with ports communicating with said passages, a plug fitting and turning in said chamber, said plug being provided with a set of slots adapted to communicate with said ports, in one position of said plug, and a second set of slots offset circumferentially from the first set and adapted to communicate with said ports, at another position of said plug, substantially as and for the purpose described.

3. The combination of a cylinder, a piston therein adapted to be reciprocated by fluid pressure, a cock located on said cylinder, said cylinder being provided with a passage leading to one end thereof, and a passage leading to the other end thereof, said cock having a chamber provided with ports having slots N extending therefrom and communicating with said passages, a plug fitting and turning in said chamber, said plug being provided with a set of slots adapted to communicate with said ports in one position of said plug and a second set of slots ofiset circumferentially from the first set and adapted to communicate with said ports at another position of said plug, substantially as and for the purpose described.

In testimony whereof, I sign this specification in the presence of two witnesses.

EDGAR J. BLOOM.

Witnesses WM. H. Donn, FRANK T. Donn. 

